Nightshade: Routine at D232

D232: Step Down Right In List

Used by the routine at DrawStripsLeftToRight. Moves the position of the strips down eight pixels and right sixteen pixels, and moves on to the next strip in the list.
StepDownRightInList	D232	LD DE,$0008	Set the step down to eight.
This entry point is used by the routine at StepUpRightInList. Move on to the next strip in the list, and move the position.
StepInList	D235	INC IY	Move on to the next strip in the list.
	D237	INC IY	Move on to the next strip in the list.
This entry point is used by the routines at StepDownRight and StepUpRight. Move the position of the strips down by the step (in DE) and right sixteen pixels.
StepRight	D239	LD HL,($BBB8)	Add the step to the Y position of the strips.
	D23C	ADD HL,DE
	D23D	LD ($BBB8),HL
	D240	LD HL,($BBB6)	Add sixteen to the X position of the strips.
	D243	LD DE,$0010
	D246	ADD HL,DE
	D247	LD ($BBB6),HL
	D24A	RET	Return.